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Posted to dev@kafka.apache.org by "Jun Rao (JIRA)" <ji...@apache.org> on 2018/10/26 22:54:00 UTC

[jira] [Created] (KAFKA-7557) optimize LogManager.truncateFullyAndStartAt()

Jun Rao created KAFKA-7557:
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             Summary: optimize LogManager.truncateFullyAndStartAt()
                 Key: KAFKA-7557
                 URL: https://issues.apache.org/jira/browse/KAFKA-7557
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 2.0.0, 2.1.0
            Reporter: Jun Rao


When a ReplicaFetcherThread calls LogManager.truncateFullyAndStartAt() for a partition, we call LogManager.checkpointLogRecoveryOffsetsInDir() and then Log.deleteSnapshotsAfterRecoveryPointCheckpoint() on all the logs in that directory. This requires listing all the files in each log dir to figure out the snapshot files. If some logs have many log segment files. This could take some time. The can potentially block a replica fetcher thread, which indirectly causes the request handler threads to be blocked.

 



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